讨论一类非线性结构动力系统混沌运动的条件。
The conditions for chaotic motions of some dynamical systems with nonlinear structures are studied in this paper.
在非线性结构系统识别中验证了该方法的可行性与有效性。
Examples of nonlinear system identification are given to verify the feasibility and effectiveness of the proposed method.
借助动态显式有限元方法，进行了三维非线性结构动力学模拟。
By means of dynamic explicit finite element method, 3d nonlinear structure is simulated.
PCA和DPC分析结果表明，取样数据具有明显的非线性结构。
The results of PCA and DPC show that the sampling data have a remarkable nonlinear structure.
这类新算法与目前所有迭代学习控制算法不同，具有非线性结构。
The new algorithm is different from the algorithms of iterative learning control proposed recently, and is with nonlinear structure.
研究牵引火炮全发射过程非线性结构动力学有限元建模和分析中的关键问题。
The key problems of finite element modeling and analysis of nonlinear structural dynamics for the whole firing course of towed howitzer are investigated.
本文采用直接拟合恢复力模型的方法，逐步给出非线性结构的全部物理参数。
In this paper a direct fitting method is presented. The physical parameters of nonlinear structures can be identified by this method.
非线性结构时程分析的高阶单步算法是一种新的求解运动方程的直接积分法。
The high order single step algorithm is a new method of direct integration for solution equations of motion.
这种控制作用，从空间结构的角度分析，表现为课程线性结构与非线性结构；
From the point of view of space structure, this function is represented as linear structure and non linear structure of curricula;
非线性结构的参数估计和系统识别是取得和验证非线性结构数学模型的一门学科。
The parameter estimation and system identification of nonlinear structures is a subject which serves to obtain and verify mathematical model of nonlinear structures.
本次井架模型动态特性试验结果可以作为石油井架非线性结构模型建立的数据基础。
The results of modal analysis may be regarded as the base of data to establish the nonlinear model of F320 model derrick.
本文用有限元素法和对于几何非线性结构问题的增量法求解组合结构强度与稳定性问题。
This paper is devoted to solving strength and stability problems of a built structure by using the finite element method and the increment method for the geometrical nonlinear structural problem.
借助动态显式有限元方法，对该六个零件组成的机构整体进行了三维非线性结构数值模拟。
Whole mechanism being treated as a combination of six main parts, three dimensions nonlinear structural simulation is completed by means of dynamic explicit finite element code.
针对非线性结构振动控制难以用线性控制方法精确控制的情况，提出神经网络离散逆系统方法。
The vibration of nonlinear structure is difficult to control precisely by means of linear control theory. A method that combines neural networks with inverse system theory is proposed.
子集模拟法在计算结构动力可靠度时适用范围较广，针对非线性结构小失效概率的计算效率较高。
Subset simulation is a general method for structural dynamic reliability computation, and it is especially efficient for small failure probability computation of nonlinear structure.
在未来十年中，微机上的非线性结构分析将不仅成为可能，而且会成为计算力学主要的开发对象。
In the next ten years, nonlinear structural analysis on microcomputer will be the major object of developments.
由于该算法对结构的不依赖性，对难以建模的柔性结构和非线性结构的振动主动控制具有实际意义。
By reason of its no-dependency on structure, the algorithm has importance for nonlinear structure and large flexible structure of which the model is difficult to obtain.
提出一种新的非线性结构张量计算方法，扩展了基于迹的PDE正则化方法，使其适用于矩阵值数据场；
A new nonlinear structure tensor calculation method is presented. We extend the trace-based PDE regularization method to matrix-valued data fields.
在对地下结构等大型复杂非线性结构进行可靠性分析中，荷载效应统计特征分析是一个比较复杂的问题。
The statistic analysis of loading effect on lining structure is a key problem for the reliability analysis of complex nonlinear underground structure.
为了揭示地基-非线性结构相互作用体系的动力行为，采用现代动力理论对体系的振动方程进行了定性分析。
For revealing the dynamic behavior of the sod-nonlinear structure interaction system, the vibration equation of interaction system is analyzed using modern dynamic theory.
最后列举实例，根据标定的数据用该方法对某传感器进行建模，结果验证了该建模方法对此类非线性结构的预测和辨识性能。
The prediction and identification performance of these nonlinear structures were examined by an example, which models a sensor according to the results of calibration.
通过引进表示经济衰退的解释变量，我们检验了中国实际季度GD P序列当中存在的非对称性，说明这些非对称性主要是由模型的非线性结构形成的。
By inducing the measurements of recession degree, we have tested the asymmetry in quarterly real GDP data of China's economy, and showed that it is caused by the nonlinear structural model.
应用该模型对线性结构和非线性结构在变阻尼控制和外荷载激励下结构的响应进行了数值仿真，表明所提的动态递归神经网络可以达到较高的预测精度。
Simulations on linear and nonlinear structures demonstrate that RDRNN is very effective on predicting the response of a structure subject to semi-active control and external excitation.
因此，对重要建筑物或大坝结构的非线性动力损伤问题进行研究不仅具有重要的学术意义也具有非常重要的实际工程意义。
Therefore, the study of non-linear dynamic damage in important structures or great dam structures has a great important meaning not only in the academic but also in the practical engineering.
推导了考虑几何非线性项的结构形状优化位移灵敏度和应力灵敏度计算列式。
This thesis deduces computational formulations of displacement sensitivity and stress sensitivity in structural shape optimization considering geometric nonlinear element.
研究了气候海洋与大气的临界时间跨度及其非线性作用的大致结构。
This paper studies the critical time span and the approximate nonlinear action structure of climatic atmosphere and ocean.
本文详细地分析了囊体结构的非线性变形过程及刚度矩阵出现奇异的原因；
This paper analyzes the nonlinear deformational process of the envelop structure and the cause of stiffness matrix singularity in details.
该方法能直接应用到大型复杂杆系结构的几何非线性问题的求解中。
This method can be applied to the solution of geometrically nonlinear problems for complicated structures.
计算结果表明，广义协调元对于求解结构几何非线性问题同样具有精度高、收敛快等优点。
Numerical results indicate that the generalized conforming element has the advantages of high accuracy and uniform convergence to geometrically nonlinear problem of structures.
计算结果表明，广义协调元对于求解结构几何非线性问题同样具有精度高、收敛快等优点。
Numerical results indicate that the generalized conforming element has the advantages of high accuracy and uniform convergence to geometrically nonlinear problem of structures.
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